Data save processing method for disk storage device and disk...

Details Data save processing method for disk storage device and disk... Data save processing method for disk storage device and disk...

2008-04-15

2008-04-15

Korzuch, William (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

C360S031000, C360S053000, C360S075000

Reexamination Certificate

active

11299603

ABSTRACT:
A disk storage device has a plurality of disk faces and a plurality of heads. The disk storage device protects the data on the disk face for a head before the defect of the head occurs. For each head, a table for accumulating the error generation count generated by the operation of a head is provided. And a control unit predicts the defect of one head based on the accumulated error generation count, reads data on the corresponding disk face by the head of which the defect was predicted, and writes the read data to another corresponding disk face by another head. Since the defect of a head can be predicted, the data can be protected in advance.

REFERENCES:
patent: 6344938 (2002-02-01), Smith
patent: 2003/0206358 (2003-11-01), Loh et al.
patent: 2005/0246591 (2005-11-01), Johnson et al.
patent: 9-259489 (1997-10-01), None
patent: 10-027436 (1998-01-01), None

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